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Tissues of the Body. Cells combine to form tissues, and tissues combine to form organs. There are...
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Transcript of Tissues of the Body. Cells combine to form tissues, and tissues combine to form organs. There are...
•Cells combine to form tissues, and tissues combine to form organs.
•There are four primary types of tissues– Epithelial tissue– Connective tissue– Muscle tissue – Nervous tissue
Found in the outer cover of body and in the inner cavities.
Has Two Types: Membranous epithelia:
form the coverings or linings of organs.
Glandular epithelia:form exocrine and endocrine glands.
Epithelial Tissue
Glandular Epithelia
• Epithelial tissues illustrate a basic biological principle: that structure closely correlates with function
• Binds the cells and organs of the body together – All connective tissues
consist of two basic components: cells and extracellular fibers
• Two types of connective tissue are: – Fibrous Connective
tissue.– Specialized Connective
tissue
Section 4-1Connective Tissue
• An important structural component of organs – Consists of two types:
•Dense connective tissue •Loose connective tissue
Connective Tissue
• Perform specific functions essential to homeostasis
• The body contains three types of specialized connective tissue:
•Cartilage•Bone•Blood
Specialized Connective Tissues
•Cartilage – Consists of specialized cells embedded in a matrix of extracellular fibers and other extracellular material
•Blood –Contains blood cells, platelets, plasma
Osseous Tissue• Bone
– Consists of bone cells (osteocytes) and a calcified cartilage matrix•Two types of bone tissue exist: spongy and compact
• Consists of specialized cells that contract when stimulated
• The body has three types of muscle tissue:
•Skeletal (voluntary , striated)
•Cardiac (involuntary , striated)
Smooth (involuntary . non-striated)
Muscular Tissue
Nervous Tissue
• Contains specialized cells that conduct impulses
• Conducting cells, called neurons, transmit impulses from one region of the body to another.
• Nonconducting cells, neuroglia, are a type of nervous system connective tissue.
Organ Systems
• Tissues combine to form organs.
– Organs are discrete structures that have evolved to perform specific functions
– Most organs do not function alone, they are part of a group of cooperative organs, called an organ system.